Water and Air Experiments Test Worksheet

Science experiments lesson 10: Part 1 test: water and air · Set 313 · 40 questions

What you do (Find the experiment, use the idea): 1. Read the question and find its experiment. 2. Use that experiment’s idea — density, dissolving, capillary action, light bending, air pressure, push-back, air resistance or condensation. 3. For a fair-test question, find what is changed, kept the same and measured. 4. For a safety question, choose what keeps everyone safe.

1. 1.🔍 Which is the odd one out? (a) drops on a cold glass (b) drops under a pot lid (c) dew on morning grass (d) a pond icing over
2. 2.🔮 A cork floats in tap water. What happens in very salty water? (a) it turns white (b) it still floats (c) it dissolves (d) it sinks
3. 3.🧺 Do we need turmeric powder for the water rainbow? (a) needed (b) not needed
4. 4.🛟 Why is a plastic cup safer than a glass for small children here? (a) it will not break (b) it is magnetic (c) it is heavier (d) it is hotter
5. 5.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “how big we blow it”? (a) we measure it (b) we change it (c) we keep it the same
6. 6.💧 Which of these is melting? (a) dew on morning grass (b) drops on a cold glass (c) sweat drying on skin (d) butter going runny
7. 7.⚖️ Fair test — does sugar dissolve faster in warm water or in cold water? True or false: time to dissolve is what we measure. (a) False (b) True
8. 8.🧺 Which of these is not needed for the paper helicopter? (a) a ruler (b) a magnet (c) a strip of paper (d) a pencil
9. 9.⚖️ Fair test — does the card stay on with a full glass and with a half-full glass? What do we do with “the same glass”? (a) we change it (b) we measure it (c) we keep it the same
10. 10.🔮 Predict: you put ice cubes on top of the cling film. What happens? (a) fewer drops form (b) the water turns red (c) more drops form (d) the bowl freezes
11. 11.🧺 Which of these is not needed for the paper helicopter? (a) a pencil (b) a strip of paper (c) a balloon (d) a paper clip
12. 12.🧺 Do we need a comb for the dissolving test? (a) not needed (b) needed
13. 13.🧺 Three of these are needed for the paper helicopter. Which one is NOT needed? (a) yeast (b) a pencil (c) a paper clip (d) safety scissors
14. 14.True or false: a clock or timer is needed for the dissolving test. (a) False (b) True
15. 15.🧺 Three of these are needed for the water cycle bowl. Which one is NOT needed? (a) a big bowl (b) sunlight (c) a small cup (d) yeast
16. 16.🧺 Which of these is needed for the paper helicopter? (a) a pencil (b) yeast (c) a battery cell (d) a magnet
17. 17.⚖️ Fair test — does the shape of a lump of clay change whether it floats? What do we do with “the shape of the clay”? (a) we change it (b) we measure it (c) we keep it the same
18. 18.🧺 Do we need a magnet for the water rainbow? (a) not needed (b) needed
19. 19.🧺 Do we need yeast for the density tower? (a) needed (b) not needed
20. 20.True or false: a magnetic chess set works by magnetism. (a) False (b) True
21. 21.🧺 Which of these is not needed for the float-or-sink test? (a) a results table (b) small test objects (c) a tub of water (d) a magnet
22. 22.🧺 Three of these are needed for the card-on-a-glass trick. Which one is NOT needed? (a) a magnet (b) a glass of water (c) a sink or a bucket (d) a stiff postcard
23. 23.🥄 Which of these dissolves slower? (a) sugar in warm water (b) powdered sugar (c) sugar stirred well (d) sugar left unstirred
24. 24.🔍 Which is the odd one out? (a) a fridge magnet (b) a bicycle pump (c) a magnetic chess set (d) a magnetic pin holder
25. 25.🧺 Do we need safety scissors for the paper helicopter? (a) not needed (b) needed
26. 26.True or false: small test objects is needed for the float-or-sink test. (a) False (b) True
27. 27.⚖️ Fair test — does a bigger balloon go farther along the string? What do we do with “the same string”? (a) we change it (b) we measure it (c) we keep it the same
28. 28.⚖️ Fair test — does a bigger balloon go farther along the string? True or false: how big we blow it is the one thing we change. (a) True (b) False
29. 29.⚖️ Fair test — does colour reach the petals faster with a short stem or a long stem? Which of these is the one thing we change? (a) the room it stands in (b) the length of the stem (c) the amount of colour (d) time for colour to show
30. 30.🛟 What should you do after handling food colour? (a) lick your fingers (b) rub your eyes (c) wipe them on walls (d) wash your hands
31. 31.🧺 Which of these is not needed for the density tower? (a) honey (b) cooking oil (c) yeast (d) a tall clear glass
32. 32.🧺 Which of these is needed for the float-or-sink test? (a) turmeric powder (b) a magnet (c) a results table (d) a battery cell
33. 33.💧 What happens to water vapour when it touches the cold cling film? (a) it turns to smoke (b) it disappears (c) it turns to salt (d) it turns to drops
34. 34.True or false: vinegar is needed for the balloon rocket. (a) False (b) True
35. 35.🧺 Do we need a strip of paper for the paper helicopter? (a) needed (b) not needed
36. 36.True or false: a stone falls slowly through the air. (a) False (b) True
37. 37.🧺 Do we need a clear glass of water for the water rainbow? (a) needed (b) not needed
38. 38.🌈 Why does sunlight make a rainbow through a glass of water? (a) the glass is painted (b) the water is coloured (c) the paper makes colours (d) water splits the light
39. 39.🧺 Which of these is not needed for the dissolving test? (a) two clear glasses (b) cold water (c) sugar (d) a mirror
40. 40.🔍 Which is the odd one out? (a) an ice cube (b) a coin (c) a glass marble (d) a pebble

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